Tabex is an original Bulgarian drug of vegetal origin for treatment of nicotinism. It is developed on the basis of the alkaloid contained in the plant Citisus laborinum L., also called Golden Rain, widespread in the southern areas of Central Europe and Italy. All parts of the plant contain the alkaloid Cytisine, the greatest amount (up to 3%) being found in the seeds.
Fig. 1 Structural formula of cytisine